upgrade - lost notebook hook

I just recently upgraded from 6.7 to 7.5 (It has been a while I guess) by downloading and compiling the source. All appeared to go well. However, when starting up either my old installation of Sage or the upgraded version, I only get a plain html page and not the notebook login. And I can't go back apparently. What did I kill?

Ubuntu 14.04. BTW, this is a server version. Take a peek at http://sagenb.mc.edu if you want to see what I'm getting.